Onsen OniOnsen Oni

Ryujin-onsen Motoyu

龍神温泉 元湯りゅうじんおんせん もとゆ

Other
Ryujin Onsen
Kansai·Wakayama
0739-79-0726motoyu-ryujin.com

Day Use

Yes

Bathing & Water

OnsenYes

Uses natural hot spring water

Policies & Services

TattooYes

Allows entry with visible tattoos

Unverified

龍神温泉（上の湯・下の湯）混合泉

Ryujin Onsen (Kami-no-yu and Shimo-no-yu blend)

Operated by · 龍神温泉協会

Mixed source

Sampled at mixing tank
曹
Bicarbonate
Classification

Sodium Bicarbonate spring

A sodium bicarbonate hot spring blending two wellheads (Kami-no-yu and Shimo-no-yu), hypotonic and alkaline, emerging at 43.3 °C. Weakly alkaline at pH 7.8 at the source and 8.0 in the lab, it sits squarely in Japan's beauty-water family. A generous 64 mg/kg of metasilicic acid leaves the kind of thin silica film that makes skin feel noticeably smoother afterwards — the trademark texture of Ryujin Onsen, long counted among the country's beauty springs.

pH
7.80
Alkaline
Source temperature
43.3°C
Hot
Tonicity
1.50g/kg
Hypotonic
Free CO₂
12mg/kg
Low
Color
colorless and transparent
Taste
tasteless
Odor
odorless
Highlights
  • Top-decile hot
  • High silica

Analyzed May 25, 2016·和歌山県環境衛生研究センター·Cert no. 温泉第1071-2号

Programs

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SM
Sergey M
4 months ago

674. Ryujin-onsen Motoyu, Ryujin Onsen, Wakayama ★ Onsen for 800. Operating hours are 07:00-21:00. They stamp the Wakayama 88 Onsen book. They sell the Wakayama 12 Onsen stamp book (the place wasn't listed on the achievement site, but they sell the general stamp book). Photos of baths from the internet match. 1. Indoor area. In the evening it's fairly standard, but during daytime the bath really opens up - if the glass doesn't fog up in the morning, you'll have a view of trees and a bridge, creating a pleasant atmosphere. In the evening it was stuffy inside, but during the day breathing was fine. 1.1. Bath with clear water, temperature around 40. 1.2. Wooden bath with clear water, temperature around 41.5. 2. Outdoor stone bath. No view - blocked by a fence. Clear water, temperature around 41. During daytime it was a very pleasant visit - worth keeping in mind when visiting the village. 08.11.2025 09.11.2025